Two significant deposits were made, with references DX 1958, Accession Code H9304, and DX 1884, Accession code H8480. Between them , they cover the construction of the M6 from the Penrith By-pass to Carlisle, the Carlisle By-pass, and the extension to Guards Mill immediately north of the Scottish border. These deposits are listed in full under the relevant sections of the M6 descriptions.

There are many other motorway-related items in the Carlisle and Kendal record offices, and these can all be located using the key "motorway" or "motorways" in the archive search page, above. Details of the Kendal Office are: